Roberts, Peter A.;

Interlocking building block

An arcuate building structure containing at least three five-sided building blocks, at least three six-sided building blocks, and said five-sided and six-sided building blocks are independently able to provide means for connecting one of said five-sided building blocks to at least one of said six-sided building blocks. The top side of the six-sided block has a substantially triangular shape, and is substantially parallel to the bottom side of the six-sided block. The front side of the six-sided block has a substantially trapezoidal shape with a top edge, a bottom edge, a right edge, and a left edge. The right edge and the left edge have equal lengths and form equal angles with the bottom edge. The back side of the six-sided block has a substantially triangular shape with at least two sides equal in length to each other. The left and right sides of the six-sided block are congruent with each other, are in the shape of a parallelogram, and contain a recess and projection within their borders. The five-sided block contains a top side with a substantially rectangular shape and a recess and projection disposed within such shape, a left and right side (each of which are congruent with the left and right sides of the six-sided block), and a front and back side (each of which are congruent with each other and with the back side of the six-sided block).

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I claim:

1. An arcuate building structure comprised of a first five-sided building block adjacent to and abutting a first six-sided building block, a second five-sided building block, a third five-sided building block, a second six-sided building block and a third six-sided building block wherein:

(a) said first six-sided building block, is comprised of a first top side, a first front side, a first back side, a first left side, a first right side, and a first bottom side, wherein:

1. said first top side has a substantially triangular shape with at least two sides, wherein at least two of said sides of such triangular shape are equal, and said first top side is substantially parallel to said first bottom side,

2. said first front side has a substantially trapezoidal shape comprising a top edge, a bottom edge, a right edge, and a left edge, wherein said right edge and said left edge have equal lengths and form equal angles with said bottom edge,

3. said first back side has a substantially triangular shape with at least two sides equal in length to each other,

4. said first left side and said first right side have shapes which are congruent, and each of said first left side and said first right side are in the shape of a parallelogram with walls and comprise two substantially triangular-shaped recesses and two substantially triangular-shaped projections disposed between said walls of said parallelogram, and

5. said first bottom side has a substantially trapezoidal shape and is comprised of two substantially triangular recesses and two substantially triangular-shaped projections disposed between the walls of such trapezoidal shape, and

6. first left side and first right side comprise two substantially triangular-shaped plugs disposed between the walls of said parallelogram, and

7. one of each of two said triangular projections which is adjacent to said back side has a linear crest which is at a substantially right angle to said front side and said back side,

8. said projections contain one substantially obtuse angle of about 120 degrees,

9. said recesses contain one substantially obtuse angle of about 120 degrees,

(b) each of said first five-sided building block, said second five-sided building block, and said third five-sided building block is comprised of a second top side, a second front side, a second back side, a second right side, and second left side, wherein:

1. said second top side has a substantially rectangular shape and comprises two substantially triangularly shaped recesses and two triangular-shaped projections disposed within said substantially rectangular shape,

2. said second left side and said second right side are congruent with each other and are also congruent with said first left side and said first right side,

3. said second front side is congruent with both said second back side and said first back side; and

(c) one of each of two said triangular projections which is adjacent to said back side has a linear crest which is at a substantially right angle to said front side and said back side,

(d) said projections contain one substantially obtuse angle of about 120 degrees,

(e) said recesses contain one substantially obtuse angle of about 120 degrees.

2. The arcuate building structure as recited in claim 1, wherein each of said first five-sided building block, said first six-sided building block, said second five-sided building block, said second six-sided building block, said third five-sided building block, and wherein each of said third six-sided building block consists essentially of ceramic material.

3. The arcuate building structure as recited in claim 1, wherein each of said first five-sided building block, said first six-sided building block, said second five-sided building block, said second six-sided building block, said third five-sided building block, and said third six-sided building block consists essentially of plastic material.

4. The arcuate building structure as recited in claim 1, wherein each of said first five-sided building block, said first six-sided building block, said second five-sided building block, said second six-sided building block, said third five-sided building block, and said third six-sided building block consists essentially of metal material.

5. The arcuate building structure as recited in claim 1, wherein said arcuate building structure is comprised of at least fifteen of said five-sided building blocks.

6. The arcuate building structure as recited in claim 5, wherein said arcuate building structure is comprised of at least fifteen of said six-sided building blocks.

7. The arcuate structure as recited in claim 6, where the number of said five-sided building blocks in said structure is equal to the number of said six-sided building blocks in said structure.

8. A building structure comprised of a plurality of building blocks connected to each other by a plurality of integrally connected blocks, recesses and projections wherein:

(a) each of said building blocks is an integral building block with a substantially triangular cross-sectional shape, wherein each of said integrally connected ceramic building blocks is comprised of an outside face, an inside face, a first wall, a second wall, and a third wall;

(b) said outside face opposes said inside face and is connected to said inside face by said first wall, said second wall, and said third wall;

(c) said first wall is comprised of two triangular-shaped recesses and two triangular-shaped projections which are disposed between said outside face and said inside face;

(d) said second wall is comprised of two triangular-shaped recesses and two second triangular-shaped projections which are disposed between said outside face and said inside face;

(e) said third wall is comprised of two triangular-shaped recesses and two triangular-shaped projections which are disposed between said outside face and said inside face.

9. The building structure as recited in claim 8, wherein each of said building blocks consists essentially of ceramic material.

10. The building structure as recited in claim 8, wherein each of said building blocks consists essentially of plastic material.

11. The building structure as recited in claim 8, wherein each of said building blocks consists essentially of metal material.

12. An arcuate structure comprised of a plurality of six-sided building blocks connected to each other by a plurality of recesses and projections wherein:

1. each of said building blocks is an integral building block with a substantially trapezoidal cross-sectional shape, wherein said integral building block is comprised of an outside face, an inside face, a first wall, a second wall, a third wall, and a fourth wall, and

2. said outside face opposes said inside face and is connected to said inside face by said first wall, said second wall, said third wall and said fourth wall, and

3. said first wall is comprised of a first planar projection which is substantially perpendicular to said outside wall and said inside wall, and

which points inward, towards said inside wall, and

4. said first planar projection is located on said first wall with a center at a position where a straight line drawn perpendicular to said first wall on said inside face will go through the center of said inside face, and

5. said second wall is comprised of a first receptacle with a hole to accept said first planar projection from the nearest adjacent block, and

6. said first receptacle is at a substantially acute angle to said outside wall and to said inside wall, and

7. said first receptacle is located on said second wall with a center at a position where a straight line drawn perpendicular to said second wall on said inside face will go through the center of said inside face, and

8. said third wall is comprised of a second planar projection which is substantially perpendicular to said outside wall and said inside wall, and which points inward, towards said inside wall, and

9. said second planar projection is located on said third wall with a center at a position where a straight line drawn perpendicular to said first wall on said inside face will go through the center of said inside face, and

10. said fourth wall is comprised of a second receptacle with a hole to accept said second planar projection from the nearest adjacent block, and

11. said second receptacle is at a substantially acute angle to said outside wall and to said inside wall, and

12. said second receptacle is located on said fourth wall with a center at a position where a straight line drawn perpendicular to said second wall on said inside face will go through the center of said inside face, and

13. said building structure is comprised of sixty building blocks, and

14. said building structure is comprised of a trapezoidal hexecontahedron.